We see football players on the field playing football all the time. But did you know that there are a lot of physics works in football? For example 3 of Newton’s laws, 2D motion, and momentum are all a part of football. From a snap from the center, to the throw of the quarterback or from a catch of a receiver to a tackle of the defender, it’s all physics in there. A good quarter should knows where all his receivers are and where are they going to be at. When one of his receiver got open he should be able to throw to the spot that his receiver going to be at. It’s not all that easy as you think. Because he has to know how fast his receiver running, if his receiver is running fast then he has to throw it straight to the receiver. But if the receiver is running slowly then he has to throw it up in air a little higher so his guy can have time to get to the ball to make the catch. The Newton’s first law says objects stay in motion until some force is act on it. So the ball stay still until the QB throws it, which he put some force on the ball and make it accelerates. And the ball will keep going on until the WR catches it or it hits the field. http://www.youtube.com/watch?v=4eDiUu3yMPQ) Usually a small receiver or a halfback runs faster than the big line man or linebacker. Why? Well the answer can be described by the second law of motion that an English physicist, Sir Newton, came up with. According to his second law, acceleration equal force divide by mass; which mean if the player has more mass then they will most likely has less acceleration and speed. If the offensive player trying to make a block on the defender, it would be easier to block a small guy than a big giant 300 pounds guy because more mass require more force to accelerate. These also apply to how players tackle each others. When you see the players ran and hit into each other on the field, the small player usually will be the one “flying” or fall back. That’s because of momentum, momentum equal mass time velocity. So player with more mass will have more velocity (let’s say that they runs at the same speed). http://www.youtube.com/watch?v=qllsOrV3RBM&feature=feedu
And finally Newton’s third law, what it basically says is for every action there is an equal and opposite reaction force. They have to go together; neither can be exist without the other. Let’s look at that in a football way. A halfback is running the football; when he runs his feet pushes on the ground and the ground pushes back on his feet. Everybody thinks that being a kicker is the easiest position on the team. Well in that case it’s not always true. Sometime the kicker doesn’t get enough credits for what they do on the field for the team. Let’s say it’s over time, the score is tied, and it’s all come down to this field goal; if he makes it then the team will win the championship if he misses then they just loose a championship. So all the pressure are on them, he has to put lots of power on the ball and aim it around 45 degree angle because if it’s too low it will be block by the other team, but if too high then it won’t has enough power to travel a long distance. http://www.youtube.com/watch?v=FS_2oBd0emE
As a punter their job is to kick the ball as high and as far as he can. A good punt has a good hang time and travels long distance. The punter controls the velocity or speed at which the ball leaves his foot, the angle of the kick, the rotation of the football when he punts. The angle of the kick determines how high and how far the ball travels. It calls projectile motion. It has a horizontal component and a vertical component. Both components are totally independent, neither of them are depend on or affect by the other. http://www.youtube.com/watch?v=rMVBc8cE5GU
LABORATORY
Purpose: To determine how would momentum be effect if the mass if changing. Materials list: 3 peoples (two weights the same and one weight heavier), a camera and a scale. Introduction: They’ll use the weight to show that 2 of them are weighing the same and 1 of them is heavier. Two people that weight the same will run at the other (trying to run at the closet speed as they can) but we didn’t want anyone to get hurt so we have a yoga ball in the middle so they can bounce off of. Then the big guy and one of those small guys will do the same to show that the smaller guy will fall back more than when he did when he runs at the other small guy.
Equations: Momentum = mass x speed Safety Information: We have a yoga ball in the middle so when two guys run into the other there will be a ball in the middle for them to bounce off of. Planned Procedure: They’ll use the weight to show that 2 of them are weighing the same and 1 of them is heavier. Two people that weight the same will run at the other. Then we measure how far they fell back from the point they hit the other. After that the big guy and one of those small guys will do the same. We measure then compare them to show that the smaller guy fall back more than when he did when he runs at the other small guy. Actual Procedure: They use the weight to show that 2 of them are weighing the same and 1 of them is heavier. Two people that weight the same run at the other. Then we measure how far they fell back from the point they hit the other. After that the big guy and one of those small guys do the same. We measure then compare them to show that the smaller guy fall back more than when he did when he runs at the other small guy. Results: When two small guys runs into the other, both fell backward close two a meter away. But when a big guy and small do it, the small guys fell back about a meter and haft while the big guy fell back only a little bit under a meter. Discussion: There a couples human errors in this lab. Like the speed of each one when the run at the other. I didn’t have anything to measure their speed so they just tried to run as close to each other speed as they can. And since we didn’t want anyone to get hurt so we had a yoga ball in the middle, which could affect how far they fall back.
The Physic of Football
We see football players on the field playing football all the time. But did you know that there are a lot of physics works in football? For example 3 of Newton’s laws, 2D motion, and momentum are all a part of football. From a snap from the center, to the throw of the quarterback or from a catch of a receiver to a tackle of the defender, it’s all physics in there.
A good quarter should knows where all his receivers are and where are they going to be at. When one of his receiver got open he should be able to throw to the spot that his receiver going to be at. It’s not all that easy as you think. Because he has to know how fast his receiver running, if his receiver is running fast then he has to throw it straight to the receiver. But if the receiver is running slowly then he has to throw it up in air a little higher so his guy can have time to get to the ball to make the catch. The Newton’s first law says objects stay in motion until some force is act on it. So the ball stay still until the QB throws it, which he put some force on the ball and make it accelerates. And the ball will keep going on until the WR catches it or it hits the field. http://www.youtube.com/watch?v=4eDiUu3yMPQ)
Usually a small receiver or a halfback runs faster than the big line man or linebacker. Why? Well the answer can be described by the second law of motion that an English physicist, Sir Newton, came up with. According to his second law, acceleration equal force divide by mass; which mean if the player has more mass then they will most likely has less acceleration and speed. If the offensive player trying to make a block on the defender, it would be easier to block a small guy than a big giant 300 pounds guy because more mass require more force to accelerate. These also apply to how players tackle each others. When you see the players ran and hit into each other on the field, the small player usually will be the one “flying” or fall back. That’s because of momentum, momentum equal mass time velocity. So player with more mass will have more velocity (let’s say that they runs at the same speed). http://www.youtube.com/watch?v=qllsOrV3RBM&feature=feedu
And finally Newton’s third law, what it basically says is for every action there is an equal and opposite reaction force. They have to go together; neither can be exist without the other. Let’s look at that in a football way. A halfback is running the football; when he runs his feet pushes on the ground and the ground pushes back on his feet.
Everybody thinks that being a kicker is the easiest position on the team. Well in that case it’s not always true. Sometime the kicker doesn’t get enough credits for what they do on the field for the team. Let’s say it’s over time, the score is tied, and it’s all come down to this field goal; if he makes it then the team will win the championship if he misses then they just loose a championship. So all the pressure are on them, he has to put lots of power on the ball and aim it around 45 degree angle because if it’s too low it will be block by the other team, but if too high then it won’t has enough power to travel a long distance. http://www.youtube.com/watch?v=FS_2oBd0emE
As a punter their job is to kick the ball as high and as far as he can. A good punt has a good hang time and travels long distance. The punter controls the velocity or speed at which the ball leaves his foot, the angle of the kick, the rotation of the football when he punts. The angle of the kick determines how high and how far the ball travels. It calls projectile motion. It has a horizontal component and a vertical component. Both components are totally independent, neither of them are depend on or affect by the other. http://www.youtube.com/watch?v=rMVBc8cE5GU
LABORATORY
Purpose:
To determine how would momentum be effect if the mass if changing.
Materials list:
3 peoples (two weights the same and one weight heavier), a camera and a scale.
Introduction:
They’ll use the weight to show that 2 of them are weighing the same and 1 of them is heavier. Two people that weight the same will run at the other (trying to run at the closet speed as they can) but we didn’t want anyone to get hurt so we have a yoga ball in the middle so they can bounce off of. Then the big guy and one of those small guys will do the same to show that the smaller guy will fall back more than when he did when he runs at the other small guy.
Equations:
Momentum = mass x speed
Safety Information:
We have a yoga ball in the middle so when two guys run into the other there will be a ball in the middle for them to bounce off of.
Planned Procedure:
They’ll use the weight to show that 2 of them are weighing the same and 1 of them is heavier. Two people that weight the same will run at the other. Then we measure how far they fell back from the point they hit the other. After that the big guy and one of those small guys will do the same. We measure then compare them to show that the smaller guy fall back more than when he did when he runs at the other small guy.
Actual Procedure:
They use the weight to show that 2 of them are weighing the same and 1 of them is heavier. Two people that weight the same run at the other. Then we measure how far they fell back from the point they hit the other. After that the big guy and one of those small guys do the same. We measure then compare them to show that the smaller guy fall back more than when he did when he runs at the other small guy.
Results:
When two small guys runs into the other, both fell backward close two a meter away. But when a big guy and small do it, the small guys fell back about a meter and haft while the big guy fell back only a little bit under a meter.
Discussion:
There a couples human errors in this lab. Like the speed of each one when the run at the other. I didn’t have anything to measure their speed so they just tried to run as close to each other speed as they can. And since we didn’t want anyone to get hurt so we had a yoga ball in the middle, which could affect how far they fall back.